Tests such as Body Mass Index (BMI), percent body fat (determined by skinfold devices, bioelectrical impedance and underwater weighing) and waist-to-hip ratio provide information on whether a person is near his or her best weight. When any of these tests are properly administered and appropriately interpreted to parents, caregivers and/or medical personnel, the tests help identify those individuals who may be at risk for metabolic diseases such as Type II diabetes and heart disease. (7/8" diameter).

Available in three assorted colors: blue, red and white.